De " concentratiewet" / door G.A. van Poelje
type: CreativeWork
type: ProductModel
type: Book
main entity of page: https://data.bibliotheken.nl/.well-known/genid/db7ed5ded8086bac7c6a226e9aa24b1a
name: De " concentratiewet"
about: p077600983
about: p078569079
author: p070082162
language: nl
number of pages: 141
has derivative: p428012582
issued: 1937